Grouting Control for Deep-Water Jacket Skirt Pile

* With the further exploitation of offshore oil fieldsin deep-water, studying deep-water jacket construc-tion technique is becoming increasingly vital. At pre-sent, offshore platforms are usually sustained by ajacket and the jacket is fixed on the sea floor withskirt piles. For the sake of enhancing the stiffness ofthe jacket, the method of fillingcementslurry into theannular gap between the sleeve of the jacket and theskirt piles is usually adopted to connect the jacket andthe skirt piles[1].…     

分析导体电磁场时有效磁导率和复磁导率的计算

在计算铁磁媒质中非线性正弦电磁场时,需要对磁化曲线或磁滞回线进行处理。本文介绍了现有的几种处理方法,着重讨论时变电磁场数值计算中有效磁导率和复磁导率的计算方法,并论述了二者间的关系。     

导数法机构运动分析

导数法机构运动分析只需建立运动机构的位移矢量多边形，然后利用位移、速度、加速度之间的函数关系来完成速度、加速度分析。因而，分析直观明了，运算简单易行，以函数形式表示的分析结果有利于机构综合的优化计算和计算机辅助设计。     

基于示波器动态磁滞回线的波形分析

基于动态磁滞回线测量的基本原理,采用示波器显示波形,直观显示了不同信号源电压下磁性材料的磁滞回线以及励磁线圈和探测线圈的波形。对现有的磁滞回线测量仪进行改装,探测线圈采用双线圈反向连接的方式,在其外面套上励磁线圈,即可测量不同形状、不同成分结构的磁性材料。观察铁氧体材料和纯铁材料在信号源电压分别取3、6、12、24 V时的磁滞回线及双线波形,分析在不同信号源电压下两种材料实验结果的差异及原因,得出该实验所用铁氧体材料为软磁材料,纯铁为硬磁材料。改装后仪器有助于对磁滞回线产生有更直观、深刻的认识,对教学内容起到丰富、补充、拓展的作用。     

Co-design for an SoC embedded network controller

INTRODUCTION With the development of Ethernet systems and the growing capacity of modern silicon technology, embedded communication networks are playing an increasingly important role in embedded and safety critical systems. Advances in VLSI technology have also pushed integration to the point where it is now possible to design and implement a microprocessor and network controller on a single chip, known as System-on-Chip (SoC). In a network of embedded systems, each system can communi…     

组织合法性理论视阈下高校教学管理制度的合法性——以D大学为例

教学管理制度作为凸现组织正规性的重要手段,是获得国家和教育行政部门等认可的外部合法性的重要依据。但是高校内部对制度执行不彻底或者不执行等表现又凸现了制度内在合法性的危机。对这一矛盾以组织合法性理论中对合法性的分析逻辑为视角进行阐述具有适切性。合法性危机的解决从组织建设层面看,可以从管理者的建制理念、制度目标的选择、制度传递途径的多元化以及学校共享文化的建设等方面来综合考虑。     

The formation of academic self-concept and interest in primary school: Examining the generalized internal/external frame of reference model with first- and third-grade children

The generalized internal/external frame-of-reference (GI/E) model explains the formation of self-perceptions and motivational constructs through social and dimensional comparisons. Research examining the GI/E model with primary school children is scarce, especially with first-grade children. Using two fully representative first-grade cohorts and two fully representative third-grade cohorts (N = 21,162; 48% girls) from Luxembourg, we examined the relations between math and verbal achievements and corresponding domain-specific academic self-concepts (ASCs) and interests. In addition, we tested whether the relations between domain-specific achievements and interests are cross-sectionally mediated through ASCs. Positive achievement-ASC and achievement-interest relations were found within matching domains in both grade levels, while the relations between achievements and ASCs and between achievements and interests across nonmatching domains were significantly negative for third-grade children. For first-grade children, the majority of cross-domain relations were nonsignificant, except for the path between math achievement and verbal interest. For school children in both grade levels, domain-specific ASCs were found to mediate the relation between achievements and interests. Overall, the findings indicate that social comparisons play an important role in the formation of domain-specific ASCs and interests for both grade levels, while dimensional comparisons are not as important in the first school year as it is later in the third grade. Gender and cohort invariance were established in both grade levels.     

合并商誉与企业创新能力

高额商誉已成为不少公司的隐藏地雷,但鲜有文献探究合并商誉与企业创新能力之间的关系。企业的合并商誉究竟是创造未来收益的良药还是埋藏危机的毒药,它对企业创新能力的影响几何？本文选取了我国2012~2018年间涉及商誉事项的A 股上市公司作为研究样本,分析合并商誉影响企业创新能力的方向及影响机制。结果显示,合并商誉与企业创新能力之间呈倒U型关系,如果企业合并商誉的规模低于临界值,则它对企业创新能力具有提升作用,反之会损害企业的创新能力。进一步地,经过四大会计师事务所审计的公司,合并商誉对企业创新能力的激励作用更强。机制检验的结果表明,合并商誉通过外部融资能力及内部协同能力两种渠道共同对企业的创新能力产生影响。上述结果经过稳健性检验之后仍然成立。本文的研究结果不仅丰富了企业创新动因和合并商誉经济后果的文献,而且可以引导企业及投资者理性看待合并商誉,为其创新决策提供参考。     

柳州地区外宣翻译的文化传播影响因素与对策研究

外宣翻译对于城市来说,是对外宣传的手段。本文对广西柳州地区外宣翻译的文化传播现状、水平与发展趋势进行研究,分析了柳州地区外宣翻译的文化传播影响因素,探讨了外宣翻译的对策。     

基于北部湾城市群下科技服务产业空间分工及其对外功能的测度研究

本文采用产值密度、专业化指数和相对专业化指数等指标测度北部湾城市群科技服务业集聚程度、科技服务业细分行业专业化及其优势行业分布状况,并以城市流强度指标对北部湾城市群对外功能进行测度。 总体而言,北部湾城市群科技服务业集聚程度处于偏低状态,北部湾城市群科技服务业专业化水平得到初步显示;北部湾城市群各城市科技服务业的优势行业表现为差异化态势;北部湾城市群各个城市的外向功能差异较大,并将其分为三个层级。最后提出促进北部湾城市群科技服务业协调发展政策建议。